US2647828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of ni from ammonia liquors
Assignee: Chemical Construction Corp
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Filing: 1949-06-04
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Granted: 1953-08-04
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Expires: 1969-06-04
Abstract
No abstract record available.
Inventors
- 👤 Patrick J Mcgauley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:21
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
108 words
THE TREATMENT OF A LIQUOR CONTAINING DISSOLVED COPPER AND NICKEL VALUES TO ISOLATE THE NICKEL VALUES WHICH INCLUDES THE STEPS OF: REMOVING ANY SOLIDS FROM THE LIQUOR; PRODUCING IN THE LIQUOR AN AMMONIUM SULFATE CONCENTRATION OF FROM ABOUT 10% TO ABOUT 40%; ADJUSTING THE COPPER CONTENT OF THE LIQUOR TO FROM NOT MORE THAN ABOUT 8% AT A 10% AMMONIUM SULFATE CONCENTRATION TO NOT MORE THAN ABOUT 1% AT A 40% AMMONIUM SULFATE CONCENTRATION; ADJUSTING THE PH OF THE SOLIDS-FREE LIQUOR TO FROM ABOUT 4.0 TO ABOUT 6.5 WHEREBY ALL THE COPPER VALUES REMAIN IN SOLUTION BUT SUBSTANTIALLY ALL THE NICKEL VALUES ARE PRECIPITATED, AND COLLECTING SAID PRECIPITATE.
Claim 2
Dependent Claim
108 words
THE TREATMENT OF A LIQUOR CONTAINING DISSOLVED COPPER AND NICKEL VALUES TO ISOLATE THE NICKEL VALUES WHICH INCLUDES THE STEPS OF: REMOVING ANY SOLIDS FROM THE LIQUOR; PRODUCING IN THE LIQUOR AN AMMONIUM SULFATE CONCENTRATION OF FROM ABOUT 10% TO ABOUT 40%; ADJUSTING THE COPPER CONTENT OF THE LIQUOR TO FROM NOT MORE THAN ABOUT 8% AT A 10% AMMONIUM SULFATE CONCENTRATION TO NOT MORE THAN ABOUT 1% AT A 40% AMMONIUM SULFATE CONCENTRATION; ADJUSTING THE PH OF THE SOLIDS-FREE LIQUOR TO FROM ABOUT 4.0 TO ABOUT 6.5 WHEREBY ALL THE COPPER VALUES REMAIN IN SOLUTION BUT SUBSTANTIALLY ALL THE NICKEL VALUES ARE PRECIPITATED, AND COLLECTING SAID PRECIPITATE.
Claim 3
Dependent Claim
55 words
A PROCESS ACCORDING TO CLAIM 1 IN WHICH SAID LIQUOUR CONTAINS FERRIC IONS CHARACTERIZED IN THAT PRIOR TO SAID FIRST REMOVAL OF SOLIDS FROM THE LIQUOR THE PH THEREOF IS ADJUSTED TO FROM ABOUT 3 TO ABOUT 4 WHEREBY THE FERRIC IRON PRECIPITATES, SAID PRECIPITATES BEING SEPARATED FROM THE RESIDUAL LIQUOR BEFORE FURTHER PH ADJUSTMENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |